Striking Size Reduction of Rapidly Growing Pancreatic Neuroendocrine Carcinoma Metastatic Nodal Conglomerate After Only 2 Cycles of 177 Lu-DOTATATE.

Somoza, Eduardo A; Duan, Heying; Shaheen, Shagufta; Fischer, George A; Aparici, Carina Mari · Clin Nucl Med · 2022

case_report · Level V

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Abstract

Peptide receptor radionuclide therapy (PRRT) with 177 Lu-DOTATATE has shown great treatment efficacy in patients with well-differentiated metastatic neuroendocrine tumors and a metastatic size reduction of ~20% for metastatic lesions <3 cm in size. We present a 66-year-old man with pancreatic neuroendocrine carcinoma, who had a rapidly growing metastatic nodal conglomerate, which measured close to 10 cm in size. After only 2 cycles of PRRT with 177 Lu-DOTATATE, the nodal conglomerate had a striking size reduction greater than 75%. This case highlights the potential efficacy of PRRT with 177 Lu-DOTATATE for treatment of aggressive neuroendocrine neoplasms.

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